package com.zsr.example.mapper;

import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.zsr.example.entity.UcenterMember;

/**
 * <p>
 * 会员表 Mapper 接口
 * </p>
 *
 * @author zsr
 * @since 2021-12-04
 */
public interface UcenterMemberMapper extends BaseMapper<UcenterMember> {
    /**
     * sql查询注册人数
     * @param day
     * @return
     */
    Integer selectRegisterCount(String day);
}
